El Lobo Hostal
The prime location overlooking the river and the owner's mother's restaurant across the road make this hotel a good option. The rooms are clean, and though the mattresses are a bit thin, all beds have mosquito nets—it is worth confirming this before checking in, because the big brick arch windows are covered only by mesh and won't keep 100% of the bugs out. There are plenty of private, en-suite rooms, but if you're on a budget, you can opt for one of the shared rooms.